Dirty by the Dozen

A horny headmaster and his naughty nephews are out to train twelve teachers to be sex slaves. They’ll use any scheme in their arsenal to get the hot lady professors to share their carnal knowledge. But even if the women give their bodies over freely, that doesn’t mean they’ll just take it lying down. The extracurricular activities are nonstop in every nook and cranny of this institute of lustful learning.
(Source: AniDB)

Alternate Titles

12 Female Teachers 12인의 여교사 Dirty by the Dozen Juuni-nin no Onna Kyoushi 十二人の女教師